Merge pull request #7526 from nextcloud/make-possible-for-apps-to-disable-the-navigation-bar-slide-gesture

Make possible for apps to disable the navigation bar slide gesture

4 files changed, 473 insertions, 3 deletions

diff --git a/core/js/js.js b/core/js/js.js
index 9af80676d5e..a9180663405 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -1612,12 +1612,47 @@ function initCore() {
 			snapper.close();
 		});
 
+		var navigationBarSlideGestureEnabled = false;
+		var navigationBarSlideGestureAllowed = true;
+		var navigationBarSlideGestureEnablePending = false;
+
+		OC.allowNavigationBarSlideGesture = function() {
+			navigationBarSlideGestureAllowed = true;
+
+			if (navigationBarSlideGestureEnablePending) {
+				snapper.enable();
+
+				navigationBarSlideGestureEnabled = true;
+				navigationBarSlideGestureEnablePending = false;
+			}
+		};
+
+		OC.disallowNavigationBarSlideGesture = function() {
+			navigationBarSlideGestureAllowed = false;
+
+			if (navigationBarSlideGestureEnabled) {
+				var endCurrentDrag = true;
+				snapper.disable(endCurrentDrag);
+
+				navigationBarSlideGestureEnabled = false;
+				navigationBarSlideGestureEnablePending = true;
+			}
+		};
+
 		var toggleSnapperOnSize = function() {
 			if($(window).width() > 768) {
 				snapper.close();
 				snapper.disable();
-			} else {
+
+				navigationBarSlideGestureEnabled = false;
+				navigationBarSlideGestureEnablePending = false;
+			} else if (navigationBarSlideGestureAllowed) {
 				snapper.enable();
+
+				navigationBarSlideGestureEnabled = true;
+				navigationBarSlideGestureEnablePending = false;
+			} else {
+				navigationBarSlideGestureEnablePending = true;
 			}
 		};
 
diff --git a/core/js/tests/specs/coreSpec.js b/core/js/tests/specs/coreSpec.js
index 9848fb46ffc..b6c617303cf 100644
--- a/core/js/tests/specs/coreSpec.js
+++ b/core/js/tests/specs/coreSpec.js
@@ -1112,4 +1112,431 @@ describe('Core base tests', function() {
 			expect(OC._ajaxConnectionLostHandler.calls.count()).toBe(1);
 		});
 	});
+	describe('Snapper', function() {
+		var snapConstructorStub;
+		var snapperStub;
+		var clock;
+
+		beforeEach(function() {
+			snapConstructorStub = sinon.stub(window, 'Snap');
+
+			snapperStub = {};
+			snapperStub.enable = sinon.stub();
+			snapperStub.disable = sinon.stub();
+			snapperStub.close = sinon.stub();
+
+			snapConstructorStub.returns(snapperStub);
+
+			clock = sinon.useFakeTimers();
+
+			// _.now could have been set to Date.now before Sinon replaced it
+			// with a fake version, so _.now must be stubbed to ensure that the
+			// fake Date.now will be called instead of the original one.
+			_.now = sinon.stub(_, 'now').callsFake(function() {
+				return new Date().getTime();
+			});
+
+			$('#testArea').append('<div id="app-navigation">The navigation bar</div><div id="app-content">Content</div>');
+		});
+		afterEach(function() {
+			snapConstructorStub.restore();
+
+			clock.restore();
+
+			_.now.restore();
+
+			// Remove the event handler for the resize event added to the window
+			// due to calling window.initCore() when there is an #app-navigation
+			// element.
+			$(window).off('resize');
+
+			viewport.reset();
+		});
+
+		it('is enabled on a narrow screen', function() {
+			viewport.set(480);
+
+			window.initCore();
+
+			expect(snapConstructorStub.calledOnce).toBe(true);
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.called).toBe(false);
+		});
+		it('is disabled when disallowing the gesture on a narrow screen', function() {
+			viewport.set(480);
+
+			window.initCore();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.called).toBe(false);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.disable.alwaysCalledWithExactly(true)).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+		});
+		it('is not disabled again when disallowing the gesture twice on a narrow screen', function() {
+			viewport.set(480);
+
+			window.initCore();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.called).toBe(false);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.disable.alwaysCalledWithExactly(true)).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+		});
+		it('is enabled when allowing the gesture after disallowing it on a narrow screen', function() {
+			viewport.set(480);
+
+			window.initCore();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.called).toBe(false);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.disable.alwaysCalledWithExactly(true)).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledTwice).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+		});
+		it('is not enabled again when allowing the gesture twice after disallowing it on a narrow screen', function() {
+			viewport.set(480);
+
+			window.initCore();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.called).toBe(false);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.disable.alwaysCalledWithExactly(true)).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledTwice).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledTwice).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.called).toBe(false);
+		});
+		it('is disabled on a wide screen', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapConstructorStub.calledOnce).toBe(true);
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+		});
+		it('is not disabled again when disallowing the gesture on a wide screen', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+		});
+		it('is not enabled when allowing the gesture after disallowing it on a wide screen', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+		});
+		it('is enabled when resizing to a narrow screen', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			viewport.set(480);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+		});
+		it('is not enabled when resizing to a narrow screen after disallowing the gesture', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			viewport.set(480);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+		});
+		it('is enabled when resizing to a narrow screen after disallowing the gesture and allowing it', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			viewport.set(480);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+		});
+		it('is enabled when allowing the gesture after disallowing it and resizing to a narrow screen', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			viewport.set(480);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+		});
+		it('is disabled when disallowing the gesture after disallowing it, resizing to a narrow screen and allowing it', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			viewport.set(480);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledTwice).toBe(true);
+			expect(snapperStub.disable.getCall(1).calledWithExactly(true)).toBe(true);
+		});
+		it('is disabled when resizing to a wide screen', function() {
+			viewport.set(480);
+
+			window.initCore();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.called).toBe(false);
+			expect(snapperStub.close.called).toBe(false);
+
+			viewport.set(1280);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+		});
+		it('is not disabled again when disallowing the gesture after resizing to a wide screen', function() {
+			viewport.set(480);
+
+			window.initCore();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.called).toBe(false);
+			expect(snapperStub.close.called).toBe(false);
+
+			viewport.set(1280);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.calledOnce).toBe(true);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+		});
+		it('is not enabled when allowing the gesture after disallowing it, resizing to a narrow screen and resizing to a wide screen', function() {
+			viewport.set(1280);
+
+			window.initCore();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+
+			OC.disallowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+
+			viewport.set(480);
+
+			// Setting the viewport width does not automatically trigger a
+			// resize.
+			$(window).resize();
+
+			// The resize handler is debounced to be executed a few milliseconds
+			// after the resize event.
+			clock.tick(1000);
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledOnce).toBe(true);
+			expect(snapperStub.close.calledOnce).toBe(true);
+
+			viewport.set(1280);
+
+			$(window).resize();
+
+			clock.tick(1000);
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledTwice).toBe(true);
+			expect(snapperStub.close.calledTwice).toBe(true);
+
+			OC.allowNavigationBarSlideGesture();
+
+			expect(snapperStub.enable.called).toBe(false);
+			expect(snapperStub.disable.calledTwice).toBe(true);
+			expect(snapperStub.close.calledTwice).toBe(true);
+		});
+	});
 });
diff --git a/core/vendor/core.js b/core/vendor/core.js
index bda270892ad..e573ef10642 100644
--- a/core/vendor/core.js
+++ b/core/vendor/core.js
@@ -6704,9 +6704,13 @@ dav.Client.prototype = {
 
         /**
          * Disables Snap.js events
+         * @param {Boolean} endCurrentDrag Whether to end the current drag (if any) or not.
          */
-        disable: function() {
+        disable: function(endCurrentDrag) {
             utils.dispatchEvent('disable');
+            if (endCurrentDrag) {
+                this.action.drag.endDrag();
+            }
             this.action.drag.stopListening();
         },
 
diff --git a/core/vendor/snapjs/dist/latest/snap.js b/core/vendor/snapjs/dist/latest/snap.js
index a0274138de0..7ae088d0aea 100644
--- a/core/vendor/snapjs/dist/latest/snap.js
+++ b/core/vendor/snapjs/dist/latest/snap.js
@@ -744,9 +744,13 @@
 
         /**
          * Disables Snap.js events
+         * @param {Boolean} endCurrentDrag Whether to end the current drag (if any) or not.
          */
-        disable: function() {
+        disable: function(endCurrentDrag) {
             utils.dispatchEvent('disable');
+            if (endCurrentDrag) {
+                this.action.drag.endDrag();
+            }
             this.action.drag.stopListening();
         },